-FT005 Product function introduction:1. Backlight on/off function. Time function 12H/24H system (default display when powered on: 0:00 24 hours)<br> 2. Transmitter low battery reminder. Alarm function (default display when powered on: 0:00)<br> 3. Buzzer on/off (the buzzer function is turned on or off only for the key sound, the alarm mode is not affected by this). Indoor temperature C/F (default C)<br> 4. Data signal indication. Water tank temperature C/F (Default C)<br> 5. Water tank water level display unit: meter/foot (power-on default: meter). Water tank liquid level high/low alarm mode<br> Alarm sound on/off display, default on<br> Alarm duration: 120 seconds<br> High/low water level display<br> Water level depth analog display on 10-element LCD bar graph<br> Receiver indoor temperature range: 0C~50C/-32F~122F<br> Transmitter water tank temperature measurement range: -40C~60C/-40F~140F<br> Water level measurement range: 1~5m<br> Temperature resolution: 0.1C Accuracy: 1C<br> Water level resolution: 0.01m Accuracy: 0.05m<br> Transmitter protection level: IP65 (effective protection from rain splashes from any direction)<br> Wireless transmission distance: 100 meters in open space<br> Screen size: 4.3 inches<br> Salt test; (-20C-60C) high and low temperature test;<br> Power supply (batteries are not included in delivery):<br> Receiver: 3*AAA battery power supply/TYPE-C power cable power supply;<br> Transmitter: 6*AAA battery power supply<br> Material: ABS<br> colour: White<br> Package Contents:<br> 1 x receiver<br> 1 x transmitter<br> 1 cord<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.